GELF_CHECKSUM(3) BSD Library Functions Manual GELF_CHECKSUM(3)NAME
elf32_checksum, elf64_checksum, gelf_checksum — return the checksum of an
ELF object
LIBRARY
library “libelf”
SYNOPSIS
#include <libelf.h>
long
elf32_checksum(Elf *elf);
long
elf64_checksum(Elf *elf);
#include <gelf.h>
long
gelf_checksum(Elf *elf);
DESCRIPTION
These functions return a simple checksum of the ELF object described by
their argument elf. The checksum is computed in way that allows its
value to remain unchanged in presence of modifications to the ELF object
by utilities like strip(1).
Function elf32_checksum() returns a checksum for an ELF descriptor elf of
class ELFCLASS32.
Function elf64_checksum() returns a checksum for an ELF descriptor elf of
class ELFCLASS64.
Function gelf_checksum() provides a class-independent way retrieving the
checksum for ELF object elf.
RETURN VALUES
These functions return the checksum of the ELF object, or zero in case an
error was encountered.
ERRORS
These functions may fail with the following errors:
[ELF_E_ARGUMENT] Argument elf was NULL.
[ELF_E_ARGUMENT] Argument elf was not a descriptor for an ELF file.
[ELF_E_ARGUMENT] The ELF descriptor elf was not opened for reading or
updating.
[ELF_E_CLASS] For functions elf32_checksum() and elf64_checksum(),
ELF descriptor elf did not match the class of the
called function.
[ELF_E_HEADER] The ELF object specified by argument elf had a mal‐
formed executable header.
[ELF_E_RESOURCE] An out of memory condition was detected during process‐
ing.
[ELF_E_SECTION] The ELF object specified by argument elf contained a
section with a malformed section header.
[ELF_E_VERSION] The ELF object was of an unsupported version.
SEE ALSOstrip(1), elf(3), gelf(3)BSD August 29, 2006 BSD